Ann, a user, reports her display is too dim. Which of the following should be checked to potentially increase the brightness of the display?

The desktop power supply wattage is irrelevant to a laptop display; laptops use an internal battery and adapter, and power supply capacity does not directly control backlight brightness.

Increasing screen resolution changes the pixel density of the displayed image but does not affect the backlight intensity or perceived brightness.

Laptop keyboards include function key combinations, typically Fn + a labeled brightness key, that directly control the display backlight level through firmware and the operating system. Accidentally pressing these keys is a common cause of a dim screen, and adjusting them is the simplest corrective action.

The monitor power supply cable carries power to an external desktop monitor; on a laptop the display is powered internally, so this is not applicable.